Build a Calorie Tracker for Weight-Loss Surgery (2026)

Recovering from weight-loss surgery means tiny portions, strict protein goals, and rules no generic app was built for. Instead of hunting for the perfect bariatric app, you can build your own calorie tracker in Auto — one that fits your surgeon’s targets exactly.

Why build your own instead of downloading one

Search “calorie tracker for weight loss surgery” and you’ll find plenty of bariatric and weight-loss apps. Many are solid, so it’s worth being honest: if one already matches your protein-first, low-volume needs, use it.

But most calorie trackers are built for people eating 2,000+ calories a day, not the 400–800 you’re working with after a gastric sleeve. Protein is buried under calories. Targets don’t bend to your program. Building your own in Auto flips that — you decide what matters, and it takes minutes.

Building it in Auto

Auto is camera-first. You describe what you want, snap a photo of your meal, and Auto builds you a personal mini-app (a “Frame”) around it.

A rough recipe:

1. Describe your tracker: what you want to log and which stats matter most.
2. Tell Auto to read food photos and estimate macros from the image.
3. Set your own targets — calories, protein, and anything your program requires.
4. Ask for the screens you actually use: today’s meals, history, trends.

You’re not settling for someone else’s layout. You’re describing yours.

How someone built theirs

One Auto user built a Meal Tracker Frame this way — a good template for a bariatric version.

They started by describing the whole app: analyze food photos and pull primary stats (calories, protein, fat, carbs) plus secondary ones (fiber, sugar, sodium). They laid out four screens — today’s meals with daily progress, a history view you swipe day to day, 7- and 30-day trend charts, and a settings screen to set personal targets. For someone post-surgery, that settings screen is where you’d lock in protein and calorie goals from your dietitian.

From there they refined it in plain language:

• Added manual entry, so you can type or tell Auto a meal when you can’t photograph it.
• Added meal-time push notifications — useful when you’re on a strict eating schedule.
• Built a full meal-detail page with a large photo and big, chunky stat numbers, plus icons for each macro.
• Fixed a time-zone bug so meals landed on the right day.
• Gave Auto’s chat the ability to list and edit food items and adjust goals directly.

They also polished spacing so content didn’t hide behind the tab bar. Each step was one prompt — no code, just describing what felt off and letting Auto fix it.

FAQ

Can it track protein first, like bariatric programs need? Yes. You set your own targets, so you can make protein the headline stat and treat calories as secondary.

Is this a calorie tracker for gastric sleeve specifically? It’s whatever you describe. Tell Auto your post-sleeve targets and portion realities and it builds around them.

Do I need to know how to code? No. You describe what you want and snap photos. Auto handles the build.

How accurate are photo estimates? They’re estimates. For medical or post-surgical needs, verify against labels and your care team, and use manual entry when precision matters.